1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
---
:name: ieeeck
:md5sum: 912297d3164c5b304dfe88d1002d97b1
:category: :function
:type: integer
:arguments:
- ispec:
:type: integer
:intent: input
- zero:
:type: real
:intent: input
- one:
:type: real
:intent: input
:substitutions: {}
:fortran_help: " INTEGER FUNCTION IEEECK( ISPEC, ZERO, ONE )\n\n\
* Purpose\n\
* =======\n\
*\n\
* IEEECK is called from the ILAENV to verify that Infinity and\n\
* possibly NaN arithmetic is safe (i.e. will not trap).\n\
*\n\n\
* Arguments\n\
* =========\n\
*\n\
* ISPEC (input) INTEGER\n\
* Specifies whether to test just for inifinity arithmetic\n\
* or whether to test for infinity and NaN arithmetic.\n\
* = 0: Verify infinity arithmetic only.\n\
* = 1: Verify infinity and NaN arithmetic.\n\
*\n\
* ZERO (input) REAL\n\
* Must contain the value 0.0\n\
* This is passed to prevent the compiler from optimizing\n\
* away this code.\n\
*\n\
* ONE (input) REAL\n\
* Must contain the value 1.0\n\
* This is passed to prevent the compiler from optimizing\n\
* away this code.\n\
*\n\
* RETURN VALUE: INTEGER\n\
* = 0: Arithmetic failed to produce the correct answers\n\
* = 1: Arithmetic produced the correct answers\n\
*\n\
* .. Local Scalars ..\n REAL NAN1, NAN2, NAN3, NAN4, NAN5, NAN6, NEGINF,\n $ NEGZRO, NEWZRO, POSINF\n\
* ..\n"
|
